Vacuum cleaner



FIG. 1 is a perspective view of a vacuum cleaner showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view thereof.

The dashed broken lines shown in the drawings depict portions of the vacuum cleaner, in which the design is embodied, that form no part of the claimed design. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 